Linkage problem with java.lang.String.length()

var s = new java.lang.String("");
print(typeof s);
print(s.length());
print(s);

produces "0.0 is not a function" on the line with the length call.

This is the third issue we've found with the javafx buildscript.

Rhino writes:

object
0
<the empty string>

This is some kind of linking issue.